[INFO] fetching crate flamegraph 0.3.1...
[INFO] documenting flamegraph-0.3.1 against 1.46.0 for beta-1.47-rustdoc-1
[INFO] extracting crate flamegraph 0.3.1 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate flamegraph 0.3.1 on toolchain 1.46.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate flamegraph 0.3.1
[INFO] finished tweaking crates.io crate flamegraph 0.3.1
[INFO] tweaked toml for crates.io crate flamegraph 0.3.1 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate crates.io crate flamegraph 0.3.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.46.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b508644ca0110342553f6eae5c4f4d90f8aed3fe0e5b5575f85db5cc44b01b26
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "b508644ca0110342553f6eae5c4f4d90f8aed3fe0e5b5575f85db5cc44b01b26", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b508644ca0110342553f6eae5c4f4d90f8aed3fe0e5b5575f85db5cc44b01b26", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b508644ca0110342553f6eae5c4f4d90f8aed3fe0e5b5575f85db5cc44b01b26", kill_on_drop: false }`
[INFO] [stdout] b508644ca0110342553f6eae5c4f4d90f8aed3fe0e5b5575f85db5cc44b01b26
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.46.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3eb3e39e9c9807a649a9f5f59fe9ad6baa53c59bbb12f8fc5ca403337c34f272
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "3eb3e39e9c9807a649a9f5f59fe9ad6baa53c59bbb12f8fc5ca403337c34f272", kill_on_drop: false }`
[INFO] [stderr]     Checking bytemuck v1.3.1
[INFO] [stderr]     Checking str_stack v0.1.0
[INFO] [stderr]     Checking opener v0.4.1
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.3
[INFO] [stderr]    Compiling proc-macro-error v1.0.3
[INFO] [stderr]    Compiling libc v0.2.74
[INFO] [stderr]     Checking quick-xml v0.18.1
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking signal-hook-registry v1.2.0
[INFO] [stderr]     Checking num-format v0.4.0
[INFO] [stderr]     Checking clap v2.33.1
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking crossbeam-channel v0.4.3
[INFO] [stderr]     Checking semver v0.9.0
[INFO] [stderr]     Checking serde_json v1.0.57
[INFO] [stderr]     Checking rgb v0.8.20
[INFO] [stderr]     Checking signal-hook v0.1.16
[INFO] [stderr]     Checking crossbeam v0.7.3
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling const-random-macro v0.1.8
[INFO] [stderr]     Checking cargo_metadata v0.10.0
[INFO] [stderr]    Compiling structopt-derive v0.4.8
[INFO] [stderr]     Checking const-random v0.1.8
[INFO] [stderr]     Checking ahash v0.3.8
[INFO] [stderr]     Checking dashmap v3.11.7
[INFO] [stderr]     Checking structopt v0.3.15
[INFO] [stderr]     Checking inferno v0.9.9
[INFO] [stderr]     Checking flamegraph v0.3.1 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting flamegraph v0.3.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 19.88s
[INFO] running `Command { std: "docker" "inspect" "3eb3e39e9c9807a649a9f5f59fe9ad6baa53c59bbb12f8fc5ca403337c34f272", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3eb3e39e9c9807a649a9f5f59fe9ad6baa53c59bbb12f8fc5ca403337c34f272", kill_on_drop: false }`
[INFO] [stdout] 3eb3e39e9c9807a649a9f5f59fe9ad6baa53c59bbb12f8fc5ca403337c34f272